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Finding the Fourth Proportional to 498.82, 748.21 and 174.17

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Solution

The fourth proportional to 498.82, 748.21 and 174.17 is: 261.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.82 : 748.21 = 174.17 : x
  2. Step 2: Convert to fraction form
    498.82/748.21 = 174.17/x
  3. Step 3: Cross multiply
    498.82x = 748.21 × 174.17
  4. Step 4: Simplify right side
    498.82x = 130,315.74
  5. Step 5: Solve for x
    x = 130,315.74/498.82
  6. Step 6: Final answer
    x = 261.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.